I'm a Nikon shooter primarily. I have a Nikon D800 and until recently owned the 'holy trinity' set of Nikon Lenses to go with it (14-24 f2.8, 24-70 f2.8 and 70-200 f2.8 VR II)
I love the Nikon. You can't fault the quality of the results, photos taken with the D800 and 14-24 are nothing short of sensational, but this gear is heavy!
I take the majority of my 'serious' photos while traveling abroad and I was looking for a more compact option to take (especially after an embarrassing check-in desk incident on a recent trip to Austria!)
I've been slowly putting the XE-2 through it's paces and have posted some example shots below, ranging from snap shots of the cat to 4 minute exposures on the side of the Thames.
I highly recommend the XE-2 to enthusiast photographers looking for a mix of portability and high quality. The camera is a joy to use and the results have a 'look' all of their own.
Adobe have recently added support for the Fuji Color profiles in Adobe Camera Raw 8.4 which means that you can process RAW files to match the Fuji Color presets such as Velvia.
Fuji seem committed to being a major player in the mirror-less market and they are releasing products at a serious rate... I myself have my eye on the upcoming 10-24mm and will post my thoughts on this in the coming weeks.